// 导航栏
header {
    // background-color: rgb(184, 86, 86);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 9999999999;
    transition: 0.6s;
  
    .top {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 1300px;
      margin: 0 auto;
  
      .logo1 {
        display: none;
      }
  
      .Navigation {
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
  
        li {
  
          .a:hover {
            color: #2876f1;
          }
  
          .a {
            margin: 0 15px;
            text-decoration: none;
            font-weight: 500;
            letter-spacing: 2px;
            transition: 0.6s;
            color: #fff;
          }
        }
  
        .nav:hover .ul {
          display: block;
  
        }
  
        @keyframes frames {
          from {
            height: 0px;
            overflow: hidden;
          }
  
          to {
            height: 480px;
            overflow: hidden;
          }
        }
  
        .nav {
          position: relative;
          //  二级导航
          .ul {
            animation-name: frames;
            animation-duration: 0.5s;
            position: absolute;
            display: none;
            text-align: left;
            
            width: 280px;
            left: -80px;
            
            font-size: 15px;
            padding: 0 0 20px 0;
  
            .li:hover {
              background-color: #2876f1;
              color: #fff;
            }
  
            .li:hover .t1 {
              display: block;
            }
  
            @keyframes t-1 {
              from {
                height: 0px;
              }
  
              to {
                height: 400px;
              }
            }
  
            @keyframes t1-2 {
              from {
                height: 0px;
              }
  
              to {
                height: 34px;
              }
            }
  
            @keyframes t1-3 {
              from {
                height: 0px;
              }
  
              to {
                height: 34px;
              }
            }
  
            @keyframes t1-4 {
              from {
                height: 0px;
              }
  
              to {
                height: 68px;
              }
            }
            .jian{
              .img{
                padding-top: 20px;
                display: block;
                margin: 0 auto;
                width: 27px;
                height: 20px;
              }
            }
            .li {
              width: 100%;
              height: 60px;
              line-height: 60px;
              background-color: #fff;
                
              //  三级导航
              .san{
                overflow: hidden;
                position: absolute;
               
                padding: 16px 0 16px 20px;
                display: none;
                width: 350px;
                height: auto;
                background: url(../img/ar1.jpg) no-repeat center center;
  
                a:hover {
                  color: rgb(221, 169, 73);
                }
  
                a {
                  height: 34px;
                  line-height: 34px;
                  display: block;
                  color: #fff;
                }
              }
              .t1-1 {
                animation-name: t-1;
                animation-duration: 1s;
                right: -370px;
                top: 80px;
              }
  
              .t1-2 {
                animation-name: t1-2;
                animation-duration: 1s;
                right: -370px;
                top: 250px;
              }
  
              .t1-3 {
                animation-name: t1-3;
                animation-duration: 1s;
                right: -370px;
                top: 320px;
              }
  
              .t1-4 {
                animation-name: t1-4;
                animation-duration: 1s;
                right: -370px;
                bottom: 0;
              }
              .li-1{
                color: #333;
                height: 50px;
                box-sizing: border-box;
                padding-left: 50px;
                display: block;
              }
              .li1 {
                background: url(../image/ar_1.png) no-repeat;
                background-position: 10px ;
              }
  
              .li2 {
                background: url(../image/ar_2.png) no-repeat;
                background-position: 10px;
              }
  
              .li3 {
                background: url(../image/ar_3.png) no-repeat;
                background-position: 10px ;
              }
  
              .li4 {
                background: url(../image/ar_4.png) no-repeat;
                background-position: 10px;
              }
  
              .li5 {
                background: url(../image/ar_5.png) no-repeat;
                background-position: 10px ;
              }
  
              .li6 {
                background: url(../image/ar_6.png) no-repeat;
                background-position: 10px;
              }
  
              .li7 {
                background: url(../image/ar_7.png) no-repeat;
                background-position: 10px ;
              }
  
              .li8 {
                background: url(../image/ar_8.png) no-repeat;
                background-position: 10px ;
              }
            }
          }
        }
      }
    }
  
  }
  
  header.sticky {
    padding: 6px 100px;
    background-color: #fff;
    width: 100%;
    padding: 20px 0;
  }
  
  header.sticky .top .logo {
    display: none;
  }
  
  header.sticky .top img.logo1 {
    display: block;
  }
  
  header.sticky .Navigation li .a {
    color: #000;
  }